(1)0.35-10-(0.2+6.37÷0.7)×0.5,
=-9.65-(0.2+9.1)×0.5,
=-9.65-9.3×0.5,
=-9.65-4.65,
=-(9.65+4.65),
=-14.3;
(2)91×
1
31 +9÷13-1÷13×100,
=91×
1
31 +9×
1
13 -
1
13 ×100,
=(91+9-100)×
1
13 ,
=0×
1
13 ,
=0;
(3)(
4
51 -
4
71 )×17-
3
71 ,
=
4
51 ×17-
4
71 ×17-
3
71 ,
=
4
3 -(
68
71 +
3
71 ),
=
4
3 -1,
=
1
3 ;
(4)53.5×1.9+61×1.25+41×8.1,
=53.5×(2-0.1)+(60+1)×1.25+(40+1)×8.1,
=53.5×2-53.5×0.1+60×1.25+1×1.25+40×8.1+1×8.1,
=107-5.35+75+1.25+324+8.1,
=(107+75+324)+(1.25-5.35+8.1),
=506+4,
=510;
(5)12×[(
1
2 +
1
3 )÷
5
6 ],
=12×[
5
6 ÷
5
6 ],
=12×1,
=12;
(6)
7
9 ×
14
15 +56×
1
9 +
1
9 ×
7
15 ,
=
1
9 ×7×
14
15 +56×
1
9 +
1
9 ×
7
15 ,
=(
98
15 +56+
7
15 )×
1
9 ,
=63×
1
9 ,
=7.